Pseudospin-induced chirality with staggered optical graphene

Jian-Long Liu; Wei-Min Ye; Shuang Zhang

doi:10.1038/lsa.2016.94

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Pseudospin-induced chirality with staggered optical graphene

Original Articles

- Pseudospin-induced chirality with staggered optical graphene
- Light: Science & Applications Vol. 5, Issue 3, (2016)
- Affiliations：
  
  1.School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
  2.Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  3.College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
- Author bio：
  
  WM Ye, Email: wmye72@126.com
  S Zhang, Email: s.zhang@bham.ac.uk
- Funds：
- DOI：10.1038/lsa.2016.94
  CLC：
- Published：2016-09，
  
  Published Online：22 February 2016，
  
  Received：16 October 2015，
  
  Revised：21 February 2016，
  
  Accepted：21 February 2016
- Accepted：
Scan QR Code
Liu, J. L., Ye, W. M. & Zhang, S. Pseudospin-induced chirality with staggered optical graphene. Light: Science & Applications, 5, e16094 (2016).
DOI：

Liu, J. L., Ye, W. M. & Zhang, S. Pseudospin-induced chirality with staggered optical graphene. Light: Science & Applications, 5, e16094 (2016). DOI： 10.1038/lsa.2016.94.

摘要

Abstract

Pseudospin has an important role in understanding many interesting physical phenomena that are associated with two-dimensional materials such as graphene. Pseudospin has been proposed to be directly related to angular momentum

and orbital angular momentum was recently experimentally demonstrated to be an intrinsic property of pseudospin in a photonic honeycomb lattice. However

in photonics

the interaction between spin and pseudospin for light has not been investigated. In this letter

we propose that in an optical analog of staggered graphene (that is

a photonic honeycomb lattice waveguide with in-plane inversion symmetry breaking)

the pseudospin mode can strongly couple to the spin of an optical beam that is incident in certain directions. The spin–pseudospin coupling that is caused by the spin–orbit conversion in the scattering process induces a strong optical chiral effect for the transmitted optical beam. Spin–pseudospin coupling of light opens the door to the design of pseudospin-mediated spin or valley-selective photonic devices.

关键词

Keywords

angular momentumchiralitypseudospinstaggered optical graphene

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